Home / 28,711.96-39,621.66-16,136.92

Finding the Fourth Proportional to 28,711.96, 39,621.66 and 16,136.92

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Solution

The fourth proportional to 28,711.96, 39,621.66 and 16,136.92 is: 22,268.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.96 : 39,621.66 = 16,136.92 : x
  2. Step 2: Convert to fraction form
    28,711.96/39,621.66 = 16,136.92/x
  3. Step 3: Cross multiply
    28,711.96x = 39,621.66 × 16,136.92
  4. Step 4: Simplify right side
    28,711.96x = 639,371,557.69
  5. Step 5: Solve for x
    x = 639,371,557.69/28,711.96
  6. Step 6: Final answer
    x = 22,268.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.